according to the learning speed of each person, the time will be different, and generally you can learn it within 1 weeks.
1. Statistical data is the general name of the digital data that reflect the national economic and social phenomena and other related data obtained in the process of statistical work activities.
2. Statistical data is the data indicating the characteristics, scale, structure and level of natural economic factors in a certain geographical area. It is the basic data for qualitative, positioning and quantitative statistical analysis.